They won’t be with other transgender people, They get to choose whichever bathroom they want to use.
There won’t be new bathrooms for transgenders.
Since medical records are protected, the school probably can’t get any proof of the sex change, so they most likely will just be allowed to use either bathroom.
The schools have a copy of their BC when they registered for K or 1st grade. There's a blank with F or M filled in countless times on their record. If a student went by Lance last year but by Lacy this year, then something is up.